I've tried that actually but it was a bit hit and miss to get it working. Console apps work fine in a jail but something like a browser that needs X and sound and ideally gpu acceleration it's a lot harder.
It's pretty easy. Once you set it up, it's set it and forget it. It just works like clock ever after and keeps you secure. It works with Wayland as well.
Hmm maybe I should try it again. I tried it like 5 years ago. Thanks for the reminder.
It's really fantastic. AI can help a lot, and FreeBSD handbook and manpages are superb.